Rotomolded seat back



FIG. 1 is a front elevation view.

FIG. 2 is a left elevation view.

FIG. 3 is a right elevation view.

FIG. 4 is a top plan view.

FIG. 5 is a bottom plan view.

FIG. 6 is a rear elevation view; and,

FIG. 7 is a perspective view. 

CLAIM The ornamental design for a rotomolded seat back, as shown and described. 